Patience is clearly a virtue — one best combined with artistic vision and a pen.

That seems to be the takeaway from this video of artist Miguel Endara painstakingly creating his latest work, Hero. It’s a portrait of his father composed of 3.2 million ink dots. In an infuriatingly persistent display of concentration, Endara gently dabs pen on paper as the image of his dad begins to take shape.

“It’s not exact, but very, very close to the real number,” Flavorwire reports he said of the mind-numbing number of dots placed on paper. “I multiply speed of plotting (how many dots I put down per 10 seconds) with the number of hours I work on each section.”